参数资料
型号: A3046EU
厂商: SANKEN ELECTRIC CO LTD
元件分类: 磁阻传感器
英文描述: MAGNETIC FIELD SENSOR-HALL EFFECT, -150-150mT, 0.135-0.4V, RECTANGULAR, THROUGH HOLE MOUNT
封装: PLASTIC, SIP-3
文件页数: 4/8页
文件大小: 103K
代理商: A3046EU
3046, 3056, AND 3058
HALL EFFECT
GEAR-TOOTH SENSORS
–ZERO SPEED
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
24 V
MAX
0+B
0
OUTPUT
VOLTAGE
IN
VOLTS
DIFFERENTIAL FLUX DENSITY, BE1 – BE2
Dwg. GH-034
-B
OP
RP
B
V OUT(SAT)
APPLICATIONS INFORMATION
A gear-tooth sensing system consists of the sensor IC, a back-
biasing magnet, an optional pole piece, and a target (Figure 1). The
system requirements are usually specified in terms of the effective
working air gap between the package and the target (gear teeth), the
number of switching events per rotation of the target, temperature and
speed ranges, minimum pulse duration or duty cycle, and switch point
accuracy. Careful choice of the sensor IC, magnet material and
shape, target material and shape, and assembly techniques enables
large working air gaps and high switch-point accuracy over the system
operating temperature range.
Naming Conventions. With a south pole in front of the branded
surface of the sensor, a north pole behind the sensor, the field at the
sensor is defined as positive. As used here, negative flux densities are
defined as less than zero (algebraic convention), e.g., -100 G is less
than -50 G.
Magnet Biasing. In order to sense moving non-magnetized
ferrous targets, these devices must be back-biased by mounting the
unbranded side on a small permanent magnet. Either magnetic pole
(north or south) can be used.
The devices can also be used without a back-biasing magnet.
In this configuration, the sensor can be used to detect a rotating ring
magnet such as those found in brushless dc motors or in speed
sensing applications. Here, the sensor detects the magnetic field
gradient created by the magnetic poles.
Figure 2
TYPICAL TRANSFER CHARACTERISTIC
Figure 1
TYPICAL GEAR-TOOTH SENSING
APPLICATION
BACK-BIASING
MAGNET
OPTIONAL POLE PIECE
SENSOR IC
NS
TARGET
GEAR
A
Dwg. AH-003
S
相关PDF资料
PDF描述
A3056EU MAGNETIC FIELD SENSOR-HALL EFFECT, -150-150mT, 0.135-0.4V, RECTANGULAR, THROUGH HOLE MOUNT
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